Patent US2402662A successfully refreshed from Google Patents.
US2402662A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light-sensitive electric device
Assignee: AT&T Inc
•
Filing: 1941-05-27
•
Granted: 1946-06-25
•
Expires: 1961-05-27
Abstract
No abstract record available.
Inventors
- 👤 Russell S Ohl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:00
CPC Classifications
H; H10; H10N; H10N70/00; C; C22; C22F; C22F3/00; C30; C30B; C30B11/00; G; G01; G01D; G01D5/00; G01D5/26; G01J; G01J1/00; G01J1/42; G01J5/00; G01J5/10; G01J5/20; G01J5/22; G01J5/24; G04; G04C; G04C10/00; H02; H02J; H02J7/00; H10D; H10D62/00; H10F; H10F10/00; H10F10/10; H10F99/00; H10P; H10P95/00; Y; Y02; Y02E; Y02E10/00; Y02E10/50
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1949-06-24 | 1949-12-24 | 1950-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-06-24 | 1953-12-24 | 1954-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-06-24 | 1957-12-24 | 1958-06-25 | $7700.00 | Window Closed / Lapsed |